/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.apache.celeborn.rest.v1.worker.invoker.auth;

import org.apache.celeborn.rest.v1.worker.invoker.Pair;

import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.function.Supplier;

@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.7.0")
public class HttpBearerAuth implements Authentication {
  private final String scheme;
  private Supplier<String> tokenSupplier;

  public HttpBearerAuth(String scheme) {
    this.scheme = scheme;
  }

  /**
   * Gets the token, which together with the scheme, will be sent as the value of the Authorization header.
   *
   * @return The bearer token
   */
  public String getBearerToken() {
    return tokenSupplier.get();
  }

  /**
   * Sets the token, which together with the scheme, will be sent as the value of the Authorization header.
   *
   * @param bearerToken The bearer token to send in the Authorization header
   */
  public void setBearerToken(String bearerToken) {
    this.tokenSupplier = () -> bearerToken;
  }

  /**
   * Sets the supplier of tokens, which together with the scheme, will be sent as the value of the Authorization header.
   *
   * @param tokenSupplier The supplier of bearer tokens to send in the Authorization header
   */
  public void setBearerToken(Supplier<String> tokenSupplier) {
    this.tokenSupplier = tokenSupplier;
  }

  @Override
  public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams, Map<String, String> cookieParams) {
    String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
    if (bearerToken == null) {
      return;
    }

    headerParams.put("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
  }

  private static String upperCaseBearer(String scheme) {
    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
  }
}
